Parts don't cost much. Expect to spend less than $200 total for all the LEDs. If you guys can handle surface mount soldering, then you're good to go with these mods.
The most labor intensive task is removing/reinstalling parts and disassembly of the gauges, HVAC (requires desoldering rotary terminals, then lining it back up in the tiny holes, etc.). An experienced modder can get the job done in less than a week.
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